Suzuki Grand Vitara JB416 / JB420. Manual - part 184
3C-50 Transfer: Motor-Shift Type (Transfer with Shift Actuator)
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and run it for 1 min. or more.
3) Stop vehicle and check DTC.
Troubleshooting
DTC detecting condition
Trouble area
Reception error of communication data for TCM is detected for
longer than specified time continuously.
• CAN communication circuit
• TCM
• 4WD control module
Step
Action
Yes
No
1
Was “4WD control system check” performed?
Go to Step 2.
Go to “4WD Control
System Check: Motor-
Shift Type (Transfer with
Shift Actuator)”.
2
DTC check
1) Check DTC in 4WD control module.
Is DTC U1100 and DTC U1073 detected together?
Go to Step 3.
3
DTC check
1) Check DTC in TCM.
Is DTC P1774 detected?
Go to “DTC P1774:
CAN Communication
Bus Off in Section 5A”.
Go to Step 4.
4
Check each control module connectors
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck in 4WD control module.
Is DTC U1100 detected?
Go to Step 5.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
5
CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control
modules for open, short and high resistance.
Is each CAN communication circuit in good condition?
Check TCM power and
ground circuit. If circuit
is OK, substitute a
known-good TCM and
recheck.
Repair circuit.